[1] Univ Calif Los Angeles, Sch Med, Dept Psychiat & Biobehav Sci, Los Angeles, CA 90024 USA
[2] Univ Calif Los Angeles, Sch Med, Pediat Psychiat Consultat Liaison Serv, Los Angeles, CA 90024 USA
[3] Univ Med & Dent New Jersey, New Jersey Med Sch, Dept Pediat, Newark, DE USA
[4] Hackensack Univ, Med Ctr, Sect Pediat Psychol, Hackensack, NJ USA
[5] Univ Calif Los Angeles, Sch Med, Dept Pediat, Los Angeles, CA 90024 USA
[6] Univ Calif Los Angeles, Sch Med, Dept Anesthesiol, Los Angeles, CA 90024 USA
[7] Univ Calif Los Angeles, Sch Med, Pediat Pain Program, Los Angeles, CA 90024 USA